In more recent years homity pie has been popularised by the Hairy Bikers in their Best of British series, and it's this deep-filled version that doesn't skimp on the previously rationed ingredients that is popular today as a tasty and frugal vegetarian pie. Put the cranberries into a small saucepan and cover with the sherry. Bring to the boil, remove from the heat and set aside until the cranberries have plumped up and absorbed most of the sherry. Thinly Slice the Vegetables:To ensure even cooking and easier layering, try slicing the zucchini and red pepper into thin, uniform slices. In the fridge:To store Hairy Bikers roasted vegetable lasagna in the fridge, put it in an airtight container or tightly covered with plastic wrap. It can be refrigerated for up to 3–4 days.

To make the filling, heat the oil in a sauté pan and add the onions and red peppers. Cook gently over a medium heat until the onions are soft and starting to take on some colour. Add the remaining filling ingredients along with 50ml of water and plenty of seasoning. Simmer until piping hot, then gently mash the beans so some of them break down. Remove from the heat.To make the pastry, put the flours and butter into a food processor with a generous pinch of salt and pulse until the mixture resembles breadcrumbs. Add the egg and just enough cold water to bind the mixture together. Shape the dough into a ball, wrap it in cling film, and leave it to chill in the fridge while you make the filling. Put all the cooled vegetables into a large bowl. Add 100g of the cheese and the parsley, then mix thoroughly and set aside. To assemble, put the prunes in a small saucepan and cover with the sherry or Marsala. Bring to the boil then remove from the heat and leave the prunes to absorb the sherry.

Roll out the pastry and use it to line a 20cm cake tin or a deep pie dish. Spoon the filling over the pastry. Whisk the milk and mustard together until you have a thin paste, then stir this into the cream. Season with a little salt. Pour this mixture in a slow and steady stream over the filling so it soaks through the layers of vegetables. Sprinkle the remaining cheese on top. Add the chopped tomatoes and beans and stir in the 600ml of water. Season with a good pinch of salt, bring to a simmer and cook for 10 minutes, stirring occasionally. Add the courgette, return to a simmer and cook for a further 10 minutes, stirring regularly. To assemble, put a small ladleful of the green sauce in the base of an ovenproof dish. Lightly toast each tortilla on a dry frying pan, then add a tablespoon of the filling. Top with a teaspoon of soured cream, then roll up and place in the dish. Repeat with all the tortillas, making sure they don’t quite touch, then pour over the remaining green sauce. Sprinkle over the cheese, then bake in the oven for about 30 minutes until the tortillas have browned round the edges and the cheese is bubbling.Reduce the oven temperature to 200°C/Fan 180°C/Gas 6. Put the green peppers in a bowl and cover with a plate. Leave to steam until cool enough to handle, then remove the skins. Remove the seeds from the chillies and squish the flesh out of the garlic. Roughly chop the spring onions.